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METHODS OP MANUFACTURE.
acid furnace. A certain amount of scrap,may be used in the basic furnace, or in the acid furnace, or in both; but the main, point is. to have.no basic.slag enter the acid furnace and to,, be sure that the dephosphorized'metal, when, it goes into that furnace,-shall contain as-.much carbon as is usually present in an acid bath-after the stock is; melted. "We thus have the transferred charge starting on its acid journey in the same condition as if it had been melted in the acid furnace, so that, the reaction, the slag, and. the whole, history from that moment, are the reactions, the slag and the history of the acid open-hearth furnace.
TABLE XII-A.
Metal and Slag in the Acid Furnace when Washed Metal is Trans-. ' ferred in a Molten State from a> Basic to an. Acid Furnace.
Note:    Samples over 1.10 per cent, in carbon omitted.
Heat No.	Composition of Metal, per cent.				Composition of Slag, per cent.             '				
	0	SI	8	P	SiOa	MnO.	FeO	MnO+FeO	SiO,+MnO+ FeO
A .......	1.00.	.02	.033	.025	'50.57	12.16	32.04	,44.20	94.77
	.71'	.01	.037	, .025	49.91	11.08	32 58	43.66	93.57
	.80	.03	.037	.029	55.76	9.75	28.05	87.80	93.56
	-.19	    .02	.033	.025	55.44	9.22	30.15	 -89:37	-94.81    -
B.......	.80	.03	' .025	.009	47.71	3.46	44.64	48.10	95.81
	.31	.03	.020	'-  .008	53.90	4.30	37.62	41.92	95.82
	.21	.02	.021	.008	51.50.	V:67...	,35,55	43,22,   _	_ .9.4.72
0. ...:.	.95	.02	.020	.019	51.08	12.94	29.79	42.73	93.81
	.70	.02	.020'	.019..	45.38	9.04	40.05	49.09	94.47
	.54	.03	.021	.022	50 01	9.10	35.55	44.65	94.66
	.23	.03	.020	.021	52.61	10.92	30.87	41-. 79-	;       94'. 40,   '
D .......	.77	.03	.026	.010	53.52	10.92	28.98	39.90	93.42
	.45	.03	.  .029	.011	52.22	8.34	32.58	40.92	93.14
	.31	.03	, .029.	.012	52.50	7.36	36.54	43.90'	96'. 40
E .......	.90	.02	' .040	.034	51.82	6.52	37.44	43.96	95.78
	.60	.01	'  .034	.031	50,27	7.44	38.79	46.23-	..     96.50.
	.17	.  .02	.034	.030	51.66	5.51	39.51	45.02	96.68
F.......	1.09	'    .02'	.027	.008	42.50	9.89	41.76	51.65	94.15'
	.72	.02	1   .027	.008	51.20	10.17	33.75	    43.92	95.12
	.24	.02	.027	.008	56.61	9.60	29.61	89.21	95.82
Or ......	:'75	.01	.028	.010	46.95	11.46	39.24	50.70	97.65
	.46	.01 "	.028	.010	51.02	10.44	33.93	44.37	95.39     ,
	.26	.01	.029	.010	54.80	11.58	28.17	39.75	94.55
H. ......	.95	.01	.022	'  .026	42.21	14,34	37.98	52.32	94.53
	.62	    .02	. .024	.030	49.66	12.65	32.65	45.30	94.46
	.25	.02	.023	.028	50.28	11.72	31.41	43.13	93.41
r.'i ....	i.70	.02'	.030	.011	45.16	15.14	35.461	50.60	95.76
	.43	.02	  .028	.010	47.65	9.89	86,99	46.88	94.53
	.22	.03	.029	iOll	57.23	9.36	26.91	86.27	93.50    '